net: ipv4: Do not drop to make_route if oif is l3mdev

[cascardo/linux.git] / include / net / l3mdev.h

diff --git a/include/net/l3mdev.h b/include/net/l3mdev.h
index b220dab..3832099 100644 (file)
--- a/include/net/l3mdev.h
+++ b/include/net/l3mdev.h
@@ -114,6 +114,25 @@ static inline u32 l3mdev_fib_table(const struct net_device *dev)
        return tb_id;
 }
 
+static inline bool netif_index_is_l3_master(struct net *net, int ifindex)
+{
+       struct net_device *dev;
+       bool rc = false;
+
+       if (ifindex == 0)
+               return false;
+
+       rcu_read_lock();
+
+       dev = dev_get_by_index_rcu(net, ifindex);
+       if (dev)
+               rc = netif_is_l3_master(dev);
+
+       rcu_read_unlock();
+
+       return rc;
+}
+
 struct dst_entry *l3mdev_link_scope_lookup(struct net *net, struct flowi6 *fl6);
 
 static inline
@@ -207,6 +226,11 @@ static inline u32 l3mdev_fib_table_by_index(struct net *net, int ifindex)
        return 0;
 }
 
+static inline bool netif_index_is_l3_master(struct net *net, int ifindex)
+{
+       return false;
+}
+
 static inline
 struct dst_entry *l3mdev_link_scope_lookup(struct net *net, struct flowi6 *fl6)
 {